We will weigh turn now to president obama, all hands on deck push for gun control. He flew in families of the newtown victims on air force one last night hoping they can convince lawmakers to back some compromise on the key issue of background checks for gun buyers. Jeff zeleny and he needs all the help he can get. Resistance continues to grow. Reporter: The white house is facing stiff head winds. With a new cnn poll showing that 52% of americans disapprove of how president obama is handling gun control but now the trez is hoping a bipartisan agreement can be reached before the momentum slips away. The debate over gun control is getting permanent this morning on capitol hill. D something before our tragedy becomes your tragedy. Reporter: Overnigh family members of those killed in newtown flew to washington aboard air force one hoping to lobby lawmakers after an emotional speech by the president. This is not about politics. This is about doing the right thing for all the families who are here that have been torn apart by gun violence. Reporter: As an uphill battle. A ban on so-called assault weapons and high-capacity ammunition clips stalled. The strongest chance requires background checks for gun sales. We have to tell congress it's time to require a background check for anyone who wants to buy a gun so that people who are dangerous to themselves and others cannot get their hands on a gun. Reporter: Even background checks which are supported by nine out of ten americans face strong opposition. Of 13 republican senators threatened to phil filibus filibuster. He delivered a personal briefing to the families and stood watch as the group of mothers and fathers walked down the steps to make their way to the capitol where they're asking tough questions today.

This transcript has been automatically generated and may not be 100% accurate.

President Obama: 'We Will Not Walk Away From the Promises We've Made'

The president remarks on gun legislation in Newtown, Connecticut.

Obama Visits Hartford, Conn., to Urge End to Gun Control Stalemate

The president looks to gain support for his administration's ambitious gun legislation.

{"id":18912323,"title":"Obama Visits Newtown Parents ","duration":"1:58","description":"Parents of victims of the Sandy Hook shooting helped the president in his push for gun control.","section":"GMA","mediaType":"Default"}